#title{
    text-align: center;
}
#stuTable{
    width: 60%;
    margin: 0 auto;
}

#stuTable,#stuTable th,#stuTable td{
    border: solid 1px #b0e0e6;
    border-collapse: collapse;/*合并边框*/
}

#pageUl{
    text-align: center; /*内容居中*/
}

#pageUl li{
    display: inline; /*行内元素  横着显示*/
}

#pageUl a{
    border: solid 1px powderblue;
    width: 30px;
    height: 30px;
    display: inline-block;
    text-decoration: none;
    color: blue;
    text-align: center;
    line-height: 30px;
}

.now{
    background: powderblue;
    color: blueviolet;
}
/*********添加学生对话框相关样式*********/
#showAddDialog{
    margin-left: 25%;
}

.dialog{
    border: solid 1px paleturquoise;
    width: 250px;
    padding: 20px;
    background: powderblue;
    box-shadow: 5px 5px 15px paleturquoise;
    position: absolute;
    top: 100px;
    left: 35%;
    display: none; /*默认隐藏*/
}
/*更新关闭*/
.closeBt3{
    display: block;
    width: 20px;
    height: 20px;
    border: solid 1px red;
    text-align: center;
    line-height: 20px;
    background: white;
    position: absolute;
    top: 0;
    right: 0;
    cursor: pointer;
}
.dialog .closeBt {
    display: block;
    width: 20px;
    height: 20px;
    border: solid 1px red;
    text-align: center;
    line-height: 20px;
    background: white;
    position: absolute;
    top: 0;
    right: 0;
    cursor: pointer;
}
.dialog .closeBt .closeBt3 :hover{
    background: red;
    color: white;
}